A commercial kitchen grease duct serving a Type I hood that penetrates a ceiling, wall, floor or any concealed spaces shall be enclosed from the point of penetration to the outlet terminal. In-line exhaust fans not located outdoors shall be enclosed as required for grease ducts.
How do you remove grease from ducts?
Exhaust gases often leave a thick layer of residue inside the ductwork of hoods. Pressure washing works best because it can clean surface grease as well as other stubborn deposits more comprehensively.
Why is grease duct black iron?
Black Iron Grease duct is fabricated to safely transfer contaminated air, grease vapors, and heat. In a commercial kitchen, grease is heated to its vaporization point. Vapors then cool, condense and settle on colder surfaces. This produces a highly flammable hydrocarbon which can be very dangerous.
How hot does a grease duct get?
Grease residue is combustible at approximately 700 degrees Fahrenheit. Flare-ups from grills or deep fryer malfunctions can reach these temperatures easily. If the cook line catches fire and the ductwork in your kitchen exhaust system hasn’t been properly maintained, this could present an incredible fire hazard.
What does a grease duct do?
A grease duct is a duct that is specifically designed to vent grease-laden flammable vapors from commercial cooking equipment such as stoves, deep fryers, and woks to the outside of a building or mobile food preparation trailer.
What is a Type 1 hood system?
Type 1 hoods are designed to be used with appliances that produce greasy by- products and smoke created while cooking. Type 1 hoods primarily deal with the removal of grease particles from the air they are often referred to as Grease Hoods.
How do you clean exhaust ducts?
Use a stiff brush to remove the dust and dirt from the motor and other attachments. The stiff brush allows removing stubborn dirt from the nook and crannies of the fan. Now suck in the debris with the help of a vacuum cleaner.
How do you clean vent hood vents?
To clean the inside of your range hood, use a damp (not wet) cloth to remove grease and dirt. If the inside of your hood is extra grimy, spray the cloth with a multipurpose cleaner or other cleaning solution before wiping the inside clean.
How do you clean a bathroom vent pipe?
The most efficient tips on how to clean a bathroom exhaust fan.
- Clean the Vent Cover with Soapy Water. Cleaning the cover is simple. …
- Use a Vacuum to Get Rid of Dust on the Exhaust Fan. Before you touch the exhaust fan, unplug the standard two-prong plug that powers the fan. …
- Remove Grime with a Damp Cloth.
What is black iron venting?
Welded Black Iron Grease Duct is designed and created to vent grease laden vapors from commercial cooking equipment to outside the building safely. we take special pride in fabricating this type of ductwork knowing the safety requirements and hazards in venting these types of fumes. …
What is black iron?
In this context, ‘black iron’ is just slang referring to steel pipe with black paint on it or no paint on it as opposed to being galvanized. As the son of a plumber from before the age of plastic pipe, black iron was used on gas pipes (and often still is), whereas galvanized piping was used on waste piping.
What is a Type 2 Hood?
Type II hoods shall be installed above all appliances that produce products of combustion and do not produce grease or smoke as a result of the cooking process. For example, Type 2 hoods are used to exhaust the excess heat produced by ovens, pasta cookers and commercial dishwashers.
Can you weld duct work?
Grease duct is heavy enough wall, to be stick welded with no problems.
Is burning grease harmful?
Yes, burning grease is incredibly harmful. Contact with skin can lead to severe second or third degree burns. Never douse a grease fire with water.
Does grease catch fire?
A grease fire happens when your cooking oil becomes too hot. When heating, oils first start to boil, then they’ll start smoking, and then they’ll catch on fire. … The oil won’t immediately catch fire once it starts smoking, but smoke is a danger sign that it’s well on its way to getting there.
What is double wall ductwork?
Double wall duct is constructed with a fiberglass insulation layer between a solid metal outer shell and either a perforated or solid inner shell. Both rectangular and round duct are available in double wall configurations. Double wall duct has both acoustical and thermal insulation advantages.
How do you vent a kitchen exhaust fan?
How much does it cost to put in a hood system?
The average cost of installing a commercial hood ranges from $964 to $1,174 per square foot. A 12-foot long kitchen range good may cost about $12,828 to install. Most commercial hoods measure about 10 to 14 feet long which marks the installation costs at $9640 on the lower side and $16,436 on the higher side.
What kitchen equipment requires a hood?
Mechanical ventilation hood systems are required above all high-temperature dishwashing machines (except under-counter models) and cooking equipment, including ranges, griddles, broilers, steam jacketed kettles, ovens, large popcorn machines, deep fryers, barbecues, rotisseries, and any equipment that produces cooking …
Do pizza ovens require a Type 1 hood?
Yes, commercial pizza ovens are required to be under a hood. However, due to the many different types of pizza ovens available on the market, it’s important to determine whether your pizza oven requires a Type I or Type II hood.
Do kitchen vents need to be cleaned?
As long as you maintain your range hood, your ductwork will not require cleaning. … Range hood duct cleaning is a specialized service that requires equipment that most HVAC companies don’t have. Many of these companies clean heating and air ducts, but not ductwork in your kitchen.
How do you get old grease out of a vent hood?
How do you degrease a range hood?
Fill your sink basin with hot water, dish soap and baking soda. Soak the filter in the cleaning solution for 15 to 20-minutes. Use the same cleaning brush to start scrubbing away the now-loosened grease and grime. Continue scrubbing until the range hood grease filter is clean.
How do you remove sticky oil from exhaust fan?
Prepare a mix of water and soap or you can also add a mixture of 1/4 ammonia, 2 tbsp baking soda and 1 cup full of warm water. Put on the rubber gloves and, using the above mixture and cotton cloth, scrub the exhaust fan blades and then the rest of the body. a chemical foamer.
How do you tell if your vent pipe is clogged?
How to Tell if Your Plumbing Vent is Clogged
- A Primer on Plumbing Vents. …
- Water Takes A Long Time to Drain. …
- Dry and Empty Toilet Tanks. …
- Foul Smells. …
- Gurgling or Glugging Sounds as Water Goes Down the Drain. …
- Get Those Clogs Out of Your Plumbing Vent ASAP.
Do bathroom exhaust fans need to be cleaned?
Bathroom exhaust vent fans need to be cleaned regularly. It’s very important to have an exhaust fan that’s vented to the outside in every bathroom in your home, and to run it whenever you shower or bathe and for 15-20 minutes afterward to remove excess moisture that can cause mold and mildew to form.
